Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 701 · 40 questions

What you do (Choose the right way): 1. Put cotton or cloth in the funnel, then layers of sand and small pebbles. 2. Stand the funnel in a clean glass. 3. Pour muddy water in slowly and watch what drips out. 4. Compare the colour before and after — never drink it — and wash your hands.

1. 1.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) small stones from dal (c) mud from water (d) bran from wheat flour
3. 3.🫗 Which of these is done by sieving? (a) bad grains from rice (b) salt from sea water (c) bran from wheat flour (d) mud from water
4. 4.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
6. 6.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) gravel from fine sand (c) chaff from wheat grain (d) sugar from sugar water
7. 7.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
8. 8.🫗 How do we separate husk from rice grain? (a) sieving (b) evaporating (c) winnowing (d) handpicking
9. 9.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
10. 10.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) sand and pebbles (c) a funnel (d) cotton or cloth
12. 12.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) a clean glass (d) a magnet
13. 13.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
14. 14.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
15. 15.True or false: tea leaves from tea is done by filtering. (a) True (b) False
16. 16.🫗 How do we separate small stones from dal? (a) sieving (b) evaporating (c) handpicking (d) winnowing
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same muddy water (b) the filter material (c) the same funnel (d) the same glass
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) cotton or cloth (c) a funnel (d) sand and pebbles
19. 19.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
20. 20.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
21. 21.🫗 How do we separate bad grains from rice? (a) evaporating (b) sieving (c) filtering (d) handpicking
22. 22.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
23. 23.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is salty (d) clear water is hot
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) a magnet (d) cotton or cloth
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
27. 27.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
28. 28.🫗 How do we separate bran from wheat flour? (a) sieving (b) filtering (c) handpicking (d) evaporating
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a funnel (c) cotton or cloth (d) muddy water
30. 30.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) muddier (d) clearer
31. 31.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
33. 33.True or false: salt from sea water is done by evaporating. (a) False (b) True
34. 34.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
35. 35.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
36. 36.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
37. 37.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) the filter material (c) how clear the water is
39. 39.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) muddy water (c) sand and pebbles (d) a clean glass
40. 40.True or false: small stones from dal is done by evaporating. (a) True (b) False

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